[Shop-talk] Why in the world do we need 'spinning' brake pistons?

[John T. Blair]

At 08:05 AM 9/13/2018, eric at megageek.com wrote:

 >Can someone please let me know what the advantage of the new 'spin 
to compress' brake
 >pistons are?

 >..This new system requires more tools* (and they didn't even 
standardize the pattern), more
 >effort, most of the time destroys the boot, and requires you to 
line up a pin with the de-tent
 >so you can put the caliper on.

Eric,

I've seen this on Fords and I believe that they are usually the rear 
calipers?

I think this is due to the "ratchetting" action for the emergency 
brake.  So you
have to undo the fact that the piston has been screwed into the caliper.  The
tool I've seen for this is a cube so I'm assuming there are about 6 
standard distances between holes in the piston, and sizes of these holes.

John


of the

>So what am I missing?  Why are these better?  I would image they are 
>more complicated on the inside as well.  Also seems that they 
>require more machining/parts to make.
>
>
>*=I don't mind buying more tools, in fact I already bought the tool 
>and I'm looking at an upgraded version of it.
>
>
>Sent from my Commodore 64 on a 2400 Baud Modem.
>Tech Viper
>"Be as beneficent as the sun or the sea, but if your rights as a 
>rational being are trenched on, die on the first inch of your 
>territory." Ralph Waldo Emerson
>_______________________________________________
>
>Shop-talk at autox.team.net
>Donate: http://www.team.net/donate.html
>Suggested annual donation  $12.96
>Archive: http://www.team.net/pipermail/shop-talk
>
>Unsubscribe/Manage: 
>http://autox.team.net/mailman/options/shop-talk/jblair1948@cox.net

John T. Blair  WA4OHZ     email:  jblair1948 at cox.net
Va. Beach, Va                  Phone:  (757) 495-8229

           48 TR1800    48 #4 Midget    65 Morgan 4/4 Series V (B1106)
      75 Bricklin SV1 (#0887)    77 Spitfire    71 Saab Sonett III
                        65 Rambler Classic

Morgan:    www.team.net/morgan
Bricklin:     www.bricklin.org

If you can read this             - Thank a teacher!
If you are reading it in English - Thank a Vet!!

 From Dennis Prager - The American Trilogy:
      e pluribus Unum, "from many, one."
      In God We Trust
      Liberty - the  power  of  choosing,  thinking,  and  acting  for
                   oneself; freedom  from  control  or  restriction




---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/shop-talk/attachments/20180913/3eba96f7/attachment.html>